"I've been here all this time. On the other hand, why are you guys gathered here?"
Su Yun did not know what had happened in the outside world during this period of time. From the moment he entered Ruin 3 and obtained enough frost crystals, he began the process of forging magic treasures.
As this was Su Yun's first time forging a magic treasure, after he completely dispersed his supernatural domain, he escaped into his mental world. In his spiritual world, he conceptualized the way to forge magic treasures and controlled his body to forge magic treasures.
This ability to separate the body from the mind was also mastered by Su Yun after his soul wandered. This way, not only could he continuously try and make mistakes in the spiritual world, but he could also accurately control his body and avoid all the wrong points.